Chemical Engineering Basics

Question: Which of the following welding processes employs the highest welding temperature ?
[A].

Arc welding

[B].

Gas welding

[C].

Thermit welding

[D].

Resistance welding

Answer: Option D

Explanation:

No answer description available for this question.

Question: Biological shield in a nuclear reactor is generally provided to protect against the
[A].

α-rays

[B].

β-rays

[C].

gamma rays & neutrons

[D].

electrons

Answer: Option C

Explanation:

No answer description available for this question.

Question: One ton of refrigeration is not equivalent to the heat removal rate of
[A].

200 BTU/minute

[B].

50 kcal/minute

[C].

50 kJ/sec.

[D].

3.5 KW

Answer: Option C

Explanation:

No answer description available for this question.

Question: LASER
[A].

stands for Light Amplification by Stimulated Emission of Radiation.

[B].

has the same intensity as visible light.

[C].

can’t be used for cutting metals.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Name the safety device used to protect the boiler, when the water level falls below a minimum level.
[A].

Blow down valve

[B].

Blow off cock

[C].

Fusible plug

[D].

Safety valve

Answer: Option C

Explanation:

No answer description available for this question.

Question: In an eutectic system, two elements are completely
[A].

soluble in solid state.

[B].

insoluble in liquid state.

[C].

insoluble in both solid & liquid state.

[D].

soluble in liquid state.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Gross & Net calorific values will be the same for
[A].

methane

[B].

propane

[C].

carbon monoxide

[D].

hydrogen

Answer: Option C

Explanation:

No answer description available for this question.

Question: __________ is used as a material of construction for the blade of power saw.
[A].

Wrought iron

[B].

Stainless steel

[C].

Mild steel

[D].

High speed steel

Answer: Option D

Explanation:

No answer description available for this question.

Question: All modes of heat transfer i.e., conduction, convection & radiation occur in case of the
[A].

condensation of steam in a partial condenser.

[B].

boiler furnace.

[C].

insulated pipe car raying high pressure steam.

[D].

none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Atomic __________ is a whole number for an element.
[A].

number

[B].

weight

[C].

radius

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.